cannon cave in trincomalee, sri lanka

19th 39aph39 ancient arch architecture art battle beauty black blue building cannon cannons captures cave cavern century circle coast darkness defense defensive destination earliest fire found historical history hole iron landmark lanka light lighting local located location may mention military mystery natural nature number ocean old people photograph place point purposes record records reflection refuge rock ruin s shows sky spot sri stone store strategic suggests symmetry temple tourism travel trincomalee tunnel used vacation view wall warfare water window wood